MK Fan Isolation Switch 1 Gang 3 Pole White 10 Amp K4859Logic Plus Design. 1 Gang Three Pole Fan Isolator Switch In A White Plastic Finish.for Local Isolation Of Fans With Or Without Timers For Repair Or Routine Maintenance. The Mk Three Pole Fan Isolator Provides A Safe And Simple Method Of Isolating Mechanical Fan Units And Is Particularly Useful In Bathrooms, Toilets, Storerooms And Basements Where There Is Little Or No Natural Light. For Example, Timer Controlled Fans Are Often Linked Into The Lighting Circuit For Energy Saving And Convenience. In Such An Inst....£10.75In stock